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Sensing of Damage and Repair of Cement Mortar Using Electromechanical Impedance

Lead zirconium titanate (PZT) has recently emerged as a low-cost material for non-destructive monitoring for civil structures. Despite the numerous studies employing PZT transducers for structural health monitoring, no studies have assessed the effects of both damage and repair on the electromechani...

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Autores principales: Taha, Hussameldin, Ball, Richard J., Paine, Kevin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926621/
https://www.ncbi.nlm.nih.gov/pubmed/31783565
http://dx.doi.org/10.3390/ma12233925
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author Taha, Hussameldin
Ball, Richard J.
Paine, Kevin
author_facet Taha, Hussameldin
Ball, Richard J.
Paine, Kevin
author_sort Taha, Hussameldin
collection PubMed
description Lead zirconium titanate (PZT) has recently emerged as a low-cost material for non-destructive monitoring for civil structures. Despite the numerous studies employing PZT transducers for structural health monitoring, no studies have assessed the effects of both damage and repair on the electromechanical impedance response in cementitious materials. To this end, this study was conducted to assess the effects of the damage and repair of mortar samples on the electromechanical response of a surface-mounted PZT transducer. When damage was introduced to the specimen in stages, the resonance frequencies of the admittance signature were shifted to lower frequencies as the damage increased, and an increase in the peak amplitude was detected, indicating an increase in the damping and a reduction in the material stiffness properties. Also, increasing the damage in the material has been shown to decrease the sensitivity of the PZT to further damage. During the repair process, a noticeable difference between the after-damage and the after-repair admittance signatures was noted. The root-mean-square deviation (RMSD) showed a decreasing trend during the repair process, when compared to the before repair RMSD response which indicated a partial recovery for the material properties by decreasing the damping property in the material.
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spelling pubmed-69266212019-12-24 Sensing of Damage and Repair of Cement Mortar Using Electromechanical Impedance Taha, Hussameldin Ball, Richard J. Paine, Kevin Materials (Basel) Article Lead zirconium titanate (PZT) has recently emerged as a low-cost material for non-destructive monitoring for civil structures. Despite the numerous studies employing PZT transducers for structural health monitoring, no studies have assessed the effects of both damage and repair on the electromechanical impedance response in cementitious materials. To this end, this study was conducted to assess the effects of the damage and repair of mortar samples on the electromechanical response of a surface-mounted PZT transducer. When damage was introduced to the specimen in stages, the resonance frequencies of the admittance signature were shifted to lower frequencies as the damage increased, and an increase in the peak amplitude was detected, indicating an increase in the damping and a reduction in the material stiffness properties. Also, increasing the damage in the material has been shown to decrease the sensitivity of the PZT to further damage. During the repair process, a noticeable difference between the after-damage and the after-repair admittance signatures was noted. The root-mean-square deviation (RMSD) showed a decreasing trend during the repair process, when compared to the before repair RMSD response which indicated a partial recovery for the material properties by decreasing the damping property in the material. MDPI 2019-11-27 /pmc/articles/PMC6926621/ /pubmed/31783565 http://dx.doi.org/10.3390/ma12233925 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Taha, Hussameldin
Ball, Richard J.
Paine, Kevin
Sensing of Damage and Repair of Cement Mortar Using Electromechanical Impedance
title Sensing of Damage and Repair of Cement Mortar Using Electromechanical Impedance
title_full Sensing of Damage and Repair of Cement Mortar Using Electromechanical Impedance
title_fullStr Sensing of Damage and Repair of Cement Mortar Using Electromechanical Impedance
title_full_unstemmed Sensing of Damage and Repair of Cement Mortar Using Electromechanical Impedance
title_short Sensing of Damage and Repair of Cement Mortar Using Electromechanical Impedance
title_sort sensing of damage and repair of cement mortar using electromechanical impedance
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926621/
https://www.ncbi.nlm.nih.gov/pubmed/31783565
http://dx.doi.org/10.3390/ma12233925
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